/Engine/Source/Runtime/MovieScene/Public/Evaluation/MovieSceneEvaluationState.h
Object cache that looks up, resolves, and caches object bindings for a specific sequence
struct FMovieSceneObjectCache
FOnBindingInval...
OnBindingInvalidated
Invoked when a binding is either explicitly invalidated (as a result of a spawnable being spawned, or a binding override being added) or when a previously resolved binding becomes invalid